OT--Pitts actually played decent LT last season, but Todd Wade is a disaster at RT. Weigert did better over there, but he's better suited for RG. If they can get a good OT then the line might actually look half decent, with Pitts, McKinney, Flanagan, Weigert, and rookie OT. Adding another body for depth/development wouldn't be a bad idea either. I really, really hope there's a good OT available at 2.1 because this offense could become pretty exciting if this line is solidified.
DE--Anthony Weaver was signed to man LE. He's solid but I doubt he strikes the fear of God into anyone. Antwan Peek and Jason Babin will battle at RE, and N.D. Kalu provides depth. I actually think Peek can be a good player but the Texans need a lot more in the pass rush department. It wouldn't surprise me if they try to find another pass rusher, but the signings of Weaver and Kalu may be an indication that this is one need that will have to be filled in next year's draft.
LB--Kailee Wong might/might not be ready for the start of the season, and I don't see Cowart as a long-term solution. Morlon Greenwood moves back out to weakside LB. I'd expect at least one, probably two LBs to be taken.
DB--Glenn Earl is the SS and C.C. Brown is a SS slated to start at FS. I'm fine with Dunta Robinson at one CB, but Philip Buchanon was a disaster at the other spot. DeMarcus Faggins took his spot but I'd feel a lot better if he was at least a nickel CB. I'd look for a DB with the 3.1 or 3.2 pick. A play-making safety and another CB are big needs.
Overall the offense appears to be a lot closer than the defense. I'm optimistic that Kubiak's coaching (man, Dom Capers was THE WORST) along with the addition of Bush, Moulds, Putzier, Walter, and Flanagan will help Carr get his career on track. Add a good OT at 2.1 and it looks like the offense is set. Another decent OG/OT would be icing on the cake. I don't think you can fill all the needs on this team in one off-season so they should definitely have another lineman or two high on their radar after they draft Bush. Then they can pretty much fill in with defensive BPA with the rest of their picks. That would be my strategy, at least. Maybe I'm just sick of boring-### Dom Capers' football and hoping for some shootouts at Reliant Stadium in the near future...